package com.gxc.filter;

import com.gxc.utils.MyServletRequestWrapper;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

/**
 * 过滤器.
 *
 * @author 宫新程
 * @since 2019/1/14 1:32 PM
 */
public class MyFilter implements Filter {

  @Override
  public void init(FilterConfig filterConfig) throws ServletException {}

  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
    ServletRequest requestWrapper = null;
    if (request instanceof HttpServletRequest) {
      requestWrapper = new MyServletRequestWrapper((HttpServletRequest) request);
    }
    chain.doFilter(requestWrapper, response);
  }

  @Override
  public void destroy() {}
}
